UV‑IR Flame Detector for Chemical Combustion System
Engineered for the rigorous demands of petro‑chemical, refinery and specialty‑chemical plants, our uv ir flame detector for chemical combustion system delivers instant, reliable flame detection across the full UV‑IR spectrum. Designed to integrate seamlessly with closed‑loop combustion controls, the detector monitors burner chambers, flare stacks, and after‑burners, providing the safety margin required for high‑temperature, high‑pressure environments.
How It Works
The sensor combines a UV‑sensitive photodiode with an IR‑bandpass detector, each tuned to the characteristic wavelengths of hydrocarbon flames (180‑260 nm for UV, 3.9‑4.5 µm for IR). When a flame ignites, the UV channel reacts within 2 µs, while the IR channel confirms combustion stability, eliminating false alarms caused by sunlight or sparks. The dual‑channel algorithm cross‑validates the signals and outputs a HIGH alarm to the PLC or DCS within 0.5 ms.
A built‑in temperature‑compensated pre‑amplifier ensures stable operation from –20 °C to +80 °C, and a self‑diagnostic routine monitors detector health, reporting sensor drift or optical contamination via the MODBUS‑RTU interface.
Technical Specifications
| Parameter | Typical Value | Units |
|---|---|---|
| Detection Range (UV) | 0.1 – 20 kW | kW |
| Detection Range (IR) | 0.2 – 25 kW | kW |
| Response Time | ≤0.5 | ms |
| Operating Temperature | ‑20 ~ +80 | °C |
| Power Supply | 24 V DC | — |
| Communications | MODBUS‑RTU, 4‑20 mA | — |
| Ingress Protection | IP66 (NEMA 4X) | — |
| Mounting Options | Flange, Bracket, Hand‑Held | — |
All parameters are customizable per order to match specific flame‑size, optical‑window, or integration requirements.
Competitive Advantages
- Dual‑band detection eliminates >95% of false alarms caused by ambient light, welding arcs, or hot‑metal spatter.
- Modular housing allows quick retrofit into existing burner cabinets without shutdown.
- Self‑diagnostic and sensor‑cleaning alerts extend service intervals beyond 24 months.
- Compliance with IEC 60529 (IP66), IEC 61010‑1, and ATEX‑II 2G categories ensures safe deployment in hazardous zones.
- Factory‑tested for a minimum MTBF of 120 000 hours, providing long‑term reliability for continuous‑operation plants.
Application Scenarios
The detector is ideal for:
- Closed‑loop burner control in refinery desulfurization units.
- Flare‑stack monitoring for offshore platforms where rapid flame detection prevents un‑burned hydrocarbon release.
- After‑burner safety in petro‑chemical polymerization reactors.
- Industrial ovens and kilns where UV/IR signatures vary with fuel type.
In each case, the uv ir flame detector for chemical combustion system integrates with the plant’s DCS to trigger automatic fuel‑shutoff, alarm annunciation, and data logging for compliance reporting.
FAQ
What is the minimum order quantity (MOQ)?
Standard MOQ is 20 units. Smaller batches can be accommodated for prototype or pilot‑plant trials, subject to a surcharge.
Can the detector be customized for a specific flame size or window material?
Yes. Optical‑window dimensions, lens coatings, and signal‑processing thresholds are configurable at the engineering stage. Our R&D team works with you to validate performance before full‑scale production.
What is the typical lead time?
Standard production lead time ranges from 15 to 45 days, depending on order volume and any bespoke options.
What warranty and support are offered?
We provide a 24‑month warranty covering manufacturing defects, along with on‑site calibration assistance and a dedicated technical hotline.
Ready to secure your combustion process? Contact our sales engineering team today for a free quotation and detailed integration guide.